Not changing a connector mutates the connector config

[gz]

It's surprising for the user (and not ideal operationally) if not changing a connector form (but pressing the update button) still leads to a change in the pipeline configuration as shown here:

https://github.com/feldera/feldera/assets/127654/c8039f38-273b-4557-af85-dc26287c78b0

The JSON should not get modified as long as the user does not do any form input